Speaker box



FIG. 1 is a perspective view of a speaker box showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Portions of that are shown as broken lines are for illustrative purposeonly and form no part of the claimed design.

The ornamental design for a speaker box, as shown and described.